find the average:
1. 5/6, 2/3
2. 5/9, 1/3, 1/4
3. 13/3, 3/4, 1/6
4. 7/9, 4, 2/3
2007-11-05 06:47:14 · 2 answers · asked by kristine z 2 in Education & Reference ➔ Homework Help
Get the common denominator, add the fractions , and dividie by the number of fractions in the problem. Here's the first:
5/6 + 4/6 = (9/6)/2 = 9/12 = 3/4
The others work in a similar way -- give it a shot
2007-11-05 06:52:21 · answer #1 · answered by John V 6 · 0⤊ 0⤋
The way to do it is to add them up then divide by the number of numbers, so
5/6 + 2/3 = 5/6 = 4/6 = 9/6 DIVIDE BY 2 = 3/4 average
5/9 + 1/3 + 1/4 = 20/36 + 12/36 + 9/36 = 41/36 divide by 3 = 41/108
13/3 + 2/4 + 1/6 = 52/12 + 6/12 + 2/12 = 60/12 divide by 3 = 20/12 or 1 2/3 average
7/9 + 4 + 2/3 = 7/9 + 36/9 + 6/9 =52/9 divide by 3 = 52/27 =
1 25/27 average
2007-11-05 07:05:28 · answer #2 · answered by quatt47 7 · 0⤊ 0⤋